Lecture 2 CSCI 510 - the Stat structure

• The string library
  • /usr/include/string.h
  • strings in C
  • strlen
  • strcmp
  • strncmp
  • strcat
  • strncat
  • strcpy
  • strchr
  • strstr
  • strpbrk
  • strspn
  • strcspan
  • strtok
  • strerror
• close
• unlink
• creat
• stdio.h
• getchar macro
• file sharing
• dup and dup2
• < Stat Structure (stat.h) >
• st\_mode
• < filetype >
• < stat, fstat, lstat system calls >

[Readings:]

[Assignment:]

Create a file with a hole in it and check the file size with "ls -s".

1. Get a copy of hole.c, compile and run it.
   1. cp /class/csci510/Examples/hole.c . // copy files
   2. cp /class/csci510/Examples/ourhdr.h .
   3. cc hole.c // Compile the program
   4. a.out // Create the file file.hole
2. Use man to see what "ls -s" tells you.
3. Use "ls -s file.hole.
4. Use "cp file.hole file2" to create another copy and then use "ls -s file2".
5. Use "wc" (wordcount on both of these files.